Process for the manufacture of cellulose-based fibers
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United States of America Patent
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Sep 1, 2015
Grant Date -
Oct 27, 2011
app pub date -
Oct 9, 2009
filing date -
Oct 14, 2008
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Abstract
A method for the spinning of a fiber comprising cellulose nano-fibrils being aligned along the main axis of the fiber from a lyotropic suspension of cellulose nano-fibrils, said nano-fibril alignment being achieved through extension of the extruded fiber from a die, spinneret or needle, wherein said fiber is dried under extension and the aligned nano-fibrils aggregate to form a continuous structure. The fibrils used in this method can be extracted from a cellulose-rich material such as wood. The invention also related to a cellulose-based fiber obtained according to this method and to a cellulose fiber which contains at least 90% wt of crystallized cellulose.
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